implement 'output.colors' options (#2532)

docs/configuration.rst

@@ -2877,6 +2877,19 @@ Description
     with a display width greater than 1.
 
 
+output.colors
+-------------
+Type
+    ``object``
+Default
+    ``{"success": "1;32", "skip": "2"}``
+Description
+    Controls the `ANSI colors <https://gist.github.com/fnky/458719343aabd01cfb17a3a4f7296797#colors--graphics-mode>`__
+    used with |mode: color|__ for successfully downloaded or skipped files.
+
+.. __: `output.mode`_
+
+
 output.skip
 -----------
 Type
@@ -3824,6 +3837,7 @@ Description
 .. |Postprocessor Configuration| replace:: ``Postprocessor Configuration``
 .. |strptime| replace:: strftime() and strptime() Behavior
 .. |postprocessors| replace:: ``postprocessors``
+.. |mode: color| replace:: ``"mode": "color"``
 
 .. _base-directory: `extractor.*.base-directory`_
 .. _date-format: `extractor.*.date-format`_

docs/gallery-dl.conf

@@ -350,6 +350,10 @@
         "mode": "auto",
         "progress": true,
         "shorten": true,
+        "colors": {
+            "success": "1;32",
+            "skip"   : "2"
+        },
         "skip": true,
         "log": "[{name}][{levelname}] {message}",
         "logfile": null,

gallery_dl/output.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2015-2021 Mike Fährmann
+# Copyright 2015-2022 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -310,16 +310,25 @@ class TerminalOutput(NullOutput):
 
 class ColorOutput(TerminalOutput):
 
+    def __init__(self):
+        TerminalOutput.__init__(self)
+
+        colors = config.get(("output",), "colors") or {}
+        self.color_skip = "\033[{}m".format(
+            colors.get("skip", "2"))
+        self.color_success = "\r\033[{}m".format(
+            colors.get("success", "1;32"))
+
     def start(self, path):
         stdout = sys.stdout
         stdout.write(self.shorten(path))
         stdout.flush()
 
     def skip(self, path):
-        sys.stdout.write("\033[2m" + self.shorten(path) + "\033[0m\n")
+        sys.stdout.write(self.color_skip + self.shorten(path) + "\033[0m\n")
 
     def success(self, path, tries):
-        sys.stdout.write("\r\033[1;32m" + self.shorten(path) + "\033[0m\n")
+        sys.stdout.write(self.color_success + self.shorten(path) + "\033[0m\n")
 
 
 class EAWCache(dict):